Guillaume de Flavy

Guillaume de Flavy was the Governor of Compiegne during the Hundred Years' War. In 1430, he defended the city of Compiegne from a Burgundian siege, but he secretly made a deal with the besiegers to betray Joan of Arc. He shut the gates to the city before Joan could return from a skirmish, claiming that he could not risk the lives of the townspeople; Joan was captured and executed for heresy a year later. De Flavy's career declined as a result of his misconduct.